<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <!-- 搜索 区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入搜索内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUsersList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUsersList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true"
            >添加用户</el-button
          >
        </el-col>
      </el-row>

      <!-- 用户数据 -->
      <el-table stripe border :data="usersList">
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChange(scope.row)"
            ></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页器 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      width="50%"
      @close="addDialogClose"
    >
      <!-- 主体内容提供区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input type="password" v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 点击确定 取消 区域 -->
      <span slot="footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户信息对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="50%"
    >
      <!-- 内容主体区域 -->
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="40%"
      @close="closeRoleDialog"
    >
      <div>
        <p>当前用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectRoleId" value-key="" placeholder="请选择" clearable filterable>
            <el-option v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
          
        </p>
      </div>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 自定义验证规则
    var checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|166|17[3678]|18[0-9]|14[57])[0-9]{8}$/;
      if (regMobile.test(value)) {
        callback();
      } else {
        callback(new Error("请输入正确手机号"));
      }
    };

    var checkEmail = (rule, value, callback) => {
      const regEmail = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/;
      if (regEmail.test(value)) return callback();
      callback(new Error("请输入正确邮箱地址"));
    };
    return {
      // 请求用户列表参数
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 2,
      },
      // 用户数据
      usersList: [],
      // 总页数
      total: 0,
      // 添加用户对话框的显示
      addDialogVisible: false,
      // 添加用户
      addForm: {
        username: "",
        password: "",
        email: "",
        mobile: "",
      },
      // 添加用户规则
      addFormRules: {
        username: [
          { required: true, message: "请输入用户名", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "用户名长度在 3~10 个字符之间",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "密码长度在 6~15 个字符之间",
            trigger: "blur",
          },
        ],
        email: [
          { required: true, message: "请输入邮箱地址", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },

      // 修改用户信息
      editDialogVisible: false,
      // 修改用户表单信息
      editForm: {},
      // 修改用户信息 验证规则
      editFormRules: {
        email: [
          { required: true, message: "请输入邮箱地址", trigger: "blur" },
          { validator: checkEmail, trigger: "blur" },
        ],
        mobile: [
          { required: true, message: "请输入手机号", trigger: "blur" },
          { validator: checkMobile, trigger: "blur" },
        ],
      },
      // 分配角色对话框
      setRoleDialogVisible: false,
      // 需分配角色的用户信息
      userInfo: {},
      // 选中的角色id值
      selectRoleId: '',
      // 角色列表
      rolesList: []
    };
  },
  created() {
    this.getUsersList();
  },
  methods: {
    async getUsersList() {
      let { data: res } = await this.$http.get("users", {
        params: this.queryInfo,
      });
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.usersList = res.data.users;
      this.total = res.data.total;
    },

    // 监听 状态的改变
    async userStateChange(userinfo) {
      let { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      );
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state;
        return this.$messgae.error("更新用户状态失败！");
      }
      this.$message.success("更新用户状态成功！");
    },

    // 监听 pagesize 的变化
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getUsersList();
    },

    // 监听页码发生变化
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getUsersList();
    },

    // 添加用户对话框关闭后清空表单
    addDialogClose() {
      this.$refs.addFormRef.resetFields();
    },

    // 点击对话框 确定 按钮进行预验证通过后添加新用户
    addUser() {
      // 1、进行表单预验证
      this.$refs.addFormRef.validate(async (vali) => {
        // 2、判断 vali 返回值是为 false  则直接返回
        if (!vali) return;
        // 3、进行网络请求把数据发送给后端
        let { data: res } = await this.$http.post("users", this.addForm);
        console.log(res);
        if (res.meta.status !== 201) return this.$message.error(res.meta.msg);
        this.$message.success("添加用户成功！");
        // 4、更新数据
        this.getUsersList();
        // 5、关闭添加用户对话框
        this.addDialogVisible = false;
      });
    },

    // 修改用户对话框的 显示与隐藏
    async showEditDialog(id) {
      this.editDialogVisible = true;
      let { data: res } = await this.$http.get("users/" + id);
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.editForm = res.data;
    },

    // 点击确定更新用户信息
    editUserInfo() {
      // 1、预验证表单
      this.$refs.editFormRef.validate(async (vali) => {
        if (!vali) return;
        let { data: res } = await this.$http.put("users/" + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile,
        });
        if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
        // 2、重新渲染数据
        this.getUsersList();
        // 3、关闭对话框
        this.editDialogVisible = false;
        // 4、提示用户
        this.$message.success("更新信息成功！");
      });
    },

    // 根据id来删除用户信息
    async removeUserById(id) {
      // 弹窗询问用户是否要删除
      const confirmResult = await this.$confirm(
        "此操作将永久删除该用户, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        }
      ).catch((err) => err);

      // 如果用户点击了 取消按钮返回 cancel 字符串
      // 如果用户点击了确定按钮返回 confirm
      if (confirmResult !== "confirm") {
        return this.$message.info("已取消删除！");
      }

      // 发请求在数据库中删除数据
      const { data: res } = await this.$http.delete("users/" + id);
      if (res.meta.status !== 200) return this.$message.error("删除用户失败！");
      this.$message.success("删除用户成功！");
      // 重新加载数据
      this.getUsersList();
    },

    // 展示分配角色对话框
    async setRole(role) {
      this.userInfo = role
      // 在对话框展示之前发送请求获取角色列表
      let {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },

    // 发请求修改角色
   async saveRoleInfo() {
     if(this.selectRoleId === '') {
       return this.$message.error('请选择角色！')
     }
     let {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectRoleId})
     if(res.meta.status !== 200) return this.$message.error('更新角色失败！')
     console.log(res);
      this.getUsersList()
      this.$message.success('更新角色成功！')
      this.setRoleDialogVisible = false;
    
    },

    // 关闭分配角色对话框
    closeRoleDialog() {
      this.userInfo = {}
      this.selectRoleId = ''
    }
  },
};
</script>

<style lang="less" scoped>
</style>